Patents by Inventor Toshiya Oi

Toshiya Oi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for shining metal sheet surfaces and method for cold-rolling metallic materials
    Patent number: 5390518
    Abstract: The invention provides a method for improving the luster of a metal sheet surface without deteriorating the productivity and also in reducing the difference in glossiness between the upper and lower surfaces of the metal sheet at the time of cold-rolling. By making the velocity, after rolling of the metal sheet, equal to or larger than the rotational circumferential velocity of the work rolls, and by rolling the metal sheet with upper and lower work rolls crossed with each other in such manner that an angle of slip scratches left on the metal sheet surfaces becomes 5 degrees or larger and shear deformation in the widthwise direction can be effectively given to the metal sheet just before rolling, thereby improving the surface luster of the metal sheet.
    Type: Grant
    Filed: March 3, 1993
    Date of Patent: February 21, 1995
    Assignees: Mitsubishi Jukogyo Kabushiki Kaisha, Sumitomo Metal Industries, Ltd.
    Inventors: Kazuo Morimoto, Hideaki Furumoto, Tetsuo Kajihara, Kanji Hayashi, Atsushi Tomizawa, Kiyotaka Hori, Toshiya Oi, Hideo Yamamoto, Masahiro Matsurra, Shunji Kamata, Toru Kaneko